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Light-charged-particle emission from hot 32S*formed in 20Ne + 12C reaction

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Abstract

Inclusive energy distributions for light charged particles (p , d , t and \( \alpha\)have been measured in the 20Ne (158, 170, 180, 200 MeV) + 12C

reactionsintheangularrange$10°$ - - $50°$.Exclusivelight-charged-particleenergydistributionmeasurementswerealsodoneforthesamesystemat158 MeVbombardingenergybyin - planelightchargedparticle - - fragmentcoincidence.Pre - equilibriumcomponentshavebeenseparatedoutfromprotonenergyspectrausingthemovingsourcemodelconsideringtwosources.ThedatahavebeencomparedwiththepredictionsofthestatisticalmodelcodeCASCADE.Ithasbeenobservedthatsignificantdeformationeffectswereneededtobeintroducedinthecompoundnucleusinordertoexplaintheshapeoftheevaporated$d$,$t$energyspectra.Forprotons, evaporatedenergyspectrawereratherinsensitivetonucleardeformation, thoughangulardistributionscouldnotbeexplainedwithoutdeformation.Thedecaysequenceofthehot$32S$nucleushasbeeninvestigatedthroughexclusivelight - - charged - particlemeasurementsusingthe$20Ne$$(158 MeV) + $12C

reaction. Information on the sequential decay chain has been extracted through a comparison of the experimental data with the predictions of the statistical model. It is observed from the present analysis that exclusive light-charged-particle data may be used as a powerful tool to probe the decay sequence of hot light compound systems.

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Author notes

  1. Aparajita Dey

    Present address: Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata, 700 064, India

  2. D. Gupta

    Present address: Department of Physics and Centre for Astroparticle Physics and Space Science, Bose Institute, Block EN, Sector V, Salt Lake City, Kolkata, 700 091, India

Authors and Affiliations

  1. Variable Energy Cyclotron Centre, Sector - 1, Block - AF, 700 064, Bidhan Nagar, Kolkata, India

    Aparajita Dey, S. Bhattacharya, C. Bhattacharya, K. Banerjee, T. K. Rana, S. Kundu, S. R. Banerjee, S. Mukhopadhyay, D. Gupta & R. Saha

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  1. Aparajita Dey
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  2. S. Bhattacharya
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  8. S. Mukhopadhyay
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Correspondence to Aparajita Dey.

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B.R. Fulton

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Dey, A., Bhattacharya, S., Bhattacharya, C. et al. Light-charged-particle emission from hot 32S*formed in 20Ne + 12C reaction. Eur. Phys. J. A 41, 39–51 (2009). https://doi.org/10.1140/epja/i2009-10772-y

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